STAPHYLINID^: 227 



Somatium effugens n. sp. Broadly oval, strongly convex, shining, 

 deep black, the abdominal apex pale, the legs blackish; imbriform 

 sculpture of the elytra and abdomen very coarse, the punctures of the 

 head and pronotum fine; pubescence moderately long, coarse and sparse; 

 head slightly more than half as wide as the prothorax, the eyes large, 

 convex, extending to the base as usual in the genus; antennae short, 

 slender, rapidly and strongly incrassate apically, pale, the club infuscate, 

 the second joint very much longer than the first, seventh transverse, 

 the eighth, or first joint of the club, not very abruptly wider, thence 

 rapidly wider to the tip, eighth and ninth very transverse, the latter, 

 on the compressed side, twice as wide as long, the tenth obtuse; pro- 

 thorax distinctly more than twice-as wide as long, the sides very strongly 

 converging, evenly and moderately arcuate from base to apex; elytra 

 transverse, subparallel, with evenly and moderately arcuate sides, at 

 base exactly equal in width to the thoracic base and closely applied 

 throughout, the suture two-fifths longer than the pronotum and distinctly 

 shorter than the elytral flanks; abdomen at base about as wide as the 

 elytral tip, thence rapidly conical, with nearly straight sides, to the tip, 

 the fifth tergite being three-fourths as wide as the base. Length 0.78 

 mm.; width 0.4 mm. Ohio (Cincinnati), Dury. 



Allied to nugator in its very coarse imbrication and color but not 

 so stout and less oblong, being more tapering posteriorly and with 

 the head notably smaller and the elytra shorter; the sculpture is 

 much coarser than in claviger. 



Somatium pallescens n. sp. Narrowly oval and only moderately 

 convex, shining, dark rufo-piceous, the abdomen black, scarcely at all 

 paler at tip, the elytra dusky-rufous, the legs blackish; punctures of 

 the head and pronotum minute, well separated, perfectly simple, the 

 elytra with coarse and rather close asperato-imbriform sculpture, the 

 imbrication of the abdomen somewhat laterally compressed throughout 

 and strong; pubescence moderate; head nearly three-fifths as wide as 

 the prothorax, the eyes moderate; antennae short, dusky, pale basally, 

 the second joint but little longer than the first and equally thick, fully 

 as long as the next two and almost twice as thick, fourth a little longer 

 than wide and truly cylindric, the sixth slightly, the seventh distinctly, 

 transverse, seven to tip rather rapidly, almost uniformly increasing, 

 the ninth not quite twice as wide as long, the last obtuse, not as long as 

 the two preceding; prothorax more than twice as wide as long, the sides 

 only moderately converging from base to apex and strongly, evenly 

 arcuate; elytra moderately transverse, subparallel, with broadly arcuate 

 sides, more rounding at base, at the latter equal in width to the thoracic 

 base but, slightly posterior thereto, evidently wider than the prothorax, 

 the suture nearly one-half longer; abdomen at base about as wide as 

 the elytral tip, very slightly tapering, with almost straight sides, the 

 fifth tergite fully four-fifths as wide as the base. Length 0.88 mm.; 

 width 0.38 mm. Iowa (Keokuk). 



